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首页> 外文期刊>Biomedical Circuits and Systems, IEEE Transactions on >A 13.56-Mbps Pulse Delay Modulation Based Transceiver for Simultaneous Near-Field Data and Power Transmission
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A 13.56-Mbps Pulse Delay Modulation Based Transceiver for Simultaneous Near-Field Data and Power Transmission

机译：基于13.56 Mbps脉冲延迟调制的收发器，用于同时近场数据和功率传输

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摘要

A fully-integrated near-field wireless transceiver has been presented for simultaneous data and power transmission across inductive links, which operates based on pulse delay modulation (PDM) technique. PDM is a low-power carrier-less modulation scheme that offers wide bandwidth along with robustness against strong power carrier interference, which makes it suitable for implantable neuroprosthetic devices, such as retinal implants. To transmit each bit, a pattern of narrow pulses are generated at the same frequency of the power carrier across the transmitter (Tx) data coil with specific time delays to initiate decaying ringing across the tuned receiver (Rx) data coil. This ringing shifts the zero-crossing times of the undesired power carrier interference on the Rx data coil, resulting in a phase shift between the signals across Rx power and data coils, from which the data bit stream can be recovered. A PDM transceiver prototype was fabricated in a 0.35- standard CMOS process, occupying 1.6 . The transceiver achieved a measured 13.56 Mbps data rate with a raw bit error rate (BER) of at 10 mm distance between figure-8 data coils, despite a signal-to-interference ratio (SIR) of 18.5 dB across the Rx data coil. At the same time, a class-D power amplifier, operating at 13.56 MHz, delivered 42 mW of regulated power across a separate pair of high-Q power coils, aligned with the data coils. The PDM data Tx and Rx power consumptions were 960 pJ/bit and 162 pJ/bit, respectively, at 1.8 V supply voltage.
机译：已经提出了一种完全集成的近场无线收发器，用于在感应链路上同时进行数据和功率传输，该收发器基于脉冲延迟调制（PDM）技术进行操作。 PDM是一种低功率无载波调制方案，可提供宽带宽以及对强功率载波干扰的鲁棒性，这使其适用于可植入的神经修复设备，例如视网膜植入物。为了发送每个位，在发射器（Tx）数据线圈两端以相同的功率载波频率产生窄脉冲模式，并具有特定的时间延迟，以启动经过调谐的接收器（Rx）数据线圈的衰减振铃。此振铃使Rx数据线圈上不希望有的载流子干扰的过零时间发生偏移，从而导致跨Rx电源和数据线圈的信号之间发生相移，从中可以恢复数据位流。 PDM收发器原型以0.35标准CMOS工艺制造，占1.6。尽管在Rx数据线圈上的信噪比（SIR）为18.5 dB，收发器仍实现了测得的13.56 Mbps数据速率，在图8数据线圈之间的距离为10 mm，原始误码率（BER）为10mm。同时，工作在13.56 MHz的D类功率放大器在与数据线圈对齐的一对单独的高Q功率线圈之间提供了42 mW的稳压功率。在1.8 V电源电压下，PDM数据的Tx和Rx功耗分别为960 pJ / bit和162 pJ / bit。

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